Akai AM-2650

Se
a
1.
FM
TUNER
SECTION
ADJUSTMENT
(Refer
to
Figs.
23,
24)
Step
Adjustment
Item
Adjustment
Point
|
Result
Remarks
Maxi
SELECTOR
to
FM
MONO,
FM
:
Front
End
IF
Coil
ae
MUTE
and
NOISE
CANCEL
to
IF
Coil
(Front
End)
“
OFF.
Tune
only
noise
without
Level
:
;
interference
of
broadcasting.
,
Centered
W
2
Tuning
MeN
a5
(EY)
Tuning
Meter
Same
as
above.
Centering
(Tuner
P.C
Board)
Bes
Indication
|
Dieter
T6
(BLU)
Less
than
0.1%
98
MHz,
60
dB
(mono)
input.
3
Ne
(Tuner
P.C
Board)
Distortion
Less
than
0.1%
on
both
channels
:
Factor
See
NOTE
1.
Conteaton
If
Tuning
Meter
Indication
is
not
of
Tuning
.
4
centered
re-adjust
Step
2
and
Mee
3
above
Indication
,
High
Range
verre
108
MHz,
60
dB
(mono)
input.
5
Scale
TCo
(Front
End)
mie
a
TUNING
INDICATOR
to
108
Indication
-
MHz.
Error:
Within
+250
kHz.
Pearee
ste
88
MHz,
60
dB
(mono)
input
6
ee
5
a
a
TUNING
INDICATOR
to
88
ie
MHz.
Error:
Within
+250
kHz.
Indication
GF
High
Range
TCA,
TCR1I,
TCR2,
TCR3
Pees
ar
ld
108
MHz,
Less
than
4
dB(mono)
;
Sensitivity
(Front
End)
Distortion
input
Factor
me
f
ie
a
7
an
Sy
8
Low
Range
Lr1i,
LR2,
LR3
—
nae
98
MHz,
Less
than
3
dB(mono)
Sensitivity
(Front
End)
-
‘
input.
See
NOTE
2.
a
actor
Cont
reHon
Ss
shat
eG
98
MHz,
Less
than
4
dB(monc)
9
of
Mid
Range
Distortion
:
ae
input.
See
NOTE
2.
Sensitivity
Factor
PLL
Free
FM
SELECTOR
to
FM
AUTO.
;
VR6
5
kB
FM
MUTE
to
ON.
Connect
10
Running
19.00
kHz
:
Peauend
(Tuner
P.C
Board)
frequency
counter
to
Test
Poi.
adil
See
NOTE
3.
Confirmation
]
98
MHz.
60
dB
(stereo)
input.
of
Stereo
ey
ee,
{1
.
Unlet
stereo
indicator
indicatts
Indicator
mere
feed
Lighting
no
stereo
separ
;
Stereo
VR120kB
Msieaian
FM
MUTE
to
OFF.
98
Mik,
12
Separation
(Tuner
P.C
Board)
45
dB
60
dB
(stereo),
Lech
input
(Left>Right)
:
Minimum
output
of
R
ch.
a
Rees
VRI
20kB
More
than
98
MHz,
60
dB
(stereo),
Rih
(Right>Left)
(Tuner
P.C
Board)
45
dB
input
Minimum
output
of
L
ch.
|
;
|
5
Signal
Meter
VR4
50
kB
Indicator
:
i
Sensitivity
(Tuner
P.C
Board)
L
at
“4.5”
oo
Mae
TOU
enon
ap
Ciar
t-1
NOTES:
1.
When
the
distortion
factor
is
not
less
than
0.1%
in
Step
3
adjust
by
turning
the
Front
End
lic
oil
core
but
not
more
than
1/2
turn.
;
2
In
the
event
that
distortion
factor
in
Step
9
is
not
less
than
3%,
re-adjust
step
7
&
8
obtan
3%
distortion
factor.
3.
PLLIC
free
running
frequency
must
be
an
exact
19.00
kHz.
19